Daqing Tianrui Machinery Manufacture Co., Ltd

Daqing Tianrui Machinery Manufacture Co., Ltd (大庆天瑞机械制造有限公司) is a Chinese manufacturer of downhole drilling equipment and oilfield tools, founded in November 2003 and headquartered in the Chengfeng Industrial Zone, Ranghulu District, Daqing, Heilongjiang Province. The company specializes in the design, development, manufacture, and technical services of PDC drill bits, core bits, PDC bearings, rotary drill stem elements, and associated oilfield drilling accessories and downhole tools. Tianrui holds API Specification 7-1 license 1004 for Rotary Drill Stem Elements, demonstrating conformance with internationally recognized standards for drill pipe, drill collars, kellys, and related drill string components. The company also holds API Q1 quality management system registration (certificate Q1-5297), reflecting its commitment to rigorous process control in oilfield equipment manufacturing. With a workforce of approximately 62 employees including 2 PhD-level researchers and 7 senior engineers, Tianrui has developed over 20 series and 100 models of diamond drill bits, with annual production capacity of 3,000 matrix-body bits and 2,000 steel-body PDC bits, plus 30,000 PDC bearing sets per year. Manufacturing and inspection equipment meets the standard for CNPC Grade-A (Jia Ji) supplier qualification. The company has exhibited at the China International Petroleum and Petrochemical Technology and Equipment Exhibition (cippe Beijing 2017), underscoring its integration into China's oilfield equipment supply chain. Tianrui primarily serves domestic Chinese oil and gas operators including those active in the Daqing oilfield, and has import/export rights for international sales.